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The FR78B Basic inline type low flow switch provides sensitivity to low flow rates with fast response and economical pricing in a compact package to deliver a cost effective solution for non-hazardous in-line applications. The FR78B BASIC's flow sensing element's cylindrical body is encapsulated in a 1.25 inch plastic cube fitted with 0.25 inch 316 stainless steel inlet and outlet tubing. The flow sensing element of this very reliable instrument weighs only 2.5 ounces, yet far outperforms its competition in the low-cost area. The FR78B BASIC spans the range of low flow requirements with response time as low as 1 second. Ideal for OEM applications, the instrument comes equipped as shown above with a single switch point control circuit board/socket and 10 feet of interconnecting Teflon cable.